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Petzl OK Screw-Lock Carabiner
Symmetric shape is ideal for use with belay devices to maximize efficiency no matter which end is closest to the device
Oval shape works great with pulleys
Keylock system
Available with manual locking system (Screw-Lock) or auto-locking system (Triact-Lock)
Many pulleys need an oval-shaped carabiner to work properly. The OK carabiner is designed for just that. It's also very useful as a general purpose carabiner at belays. Symmetric share is ideal for use with belay devices To maximize efficiency no matter which end is closest to the device. Oval shape works great with pulleys. Keylock system. Available with manual locking system (SCREW-LOCK) or auto-locking system (TRIACT-LOCK)